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Estimate the annual operating cost of providing refrigeration to a condenser with duty 1.2 MW operating at -5 ºC. The refrigeration cycle rejects heat to cooling water that is available at 40 ºC, and has an efficiency of 80% of the Carnot cycle efficiency. The plant operates for 8000 hours per year and electricity costs $0.06/kWh.
Write a differential mole balance on phosphoric acid and provide an initial condition. [Start by defining np (k mol) to be the total quantity of phosphoric acid in the tank at any time.]
2. Alcohol is a diuretic agent, which increases urine production by reducing water reabsorption. Normal rate of water reabsorption is about 124 ml/min. Assume that the effect of alcohol on water reabsorption (in ml/min) is given by the following equa..
Draw T-S diagram of the cycle.
Consider that you are a senior consulting engineer and that you need to explain the topic in a written report to your customer, who is the managing director of a large company, and a commerce or law graduate.
Calculate the mass flow rate of distillate and bottom product per hour - the mass flow rate of liquid entering the reboiler and the vapour leaving the reboiler per hour.
A 30 mol% feed of benzene in toluene is to be distilled in a batch operation. A product having an average composition of 45 mol% benzene is to be produced. Calculate the amount of residue, assuming α = 2.5 and W0 = 100.
What were the materials used in the implant? What were the advantages of the materials used and what was the surface texture of these implants? How did this contribute to the biocompatibility of the implant?
ECH 3023: Mass Balance around two distillation Columns Using Excel, Derive the simultaneous linear mass balance equations for the system using all the information provided.
using the concept of a mass balance describe how environmental engineers and scientists model the carbon cycle in the
In the Deacon process for the manufacture of chlorine, HC1 and O2 react to form Cl2 and H20. Sufficient air (21 mole% 02, 79% N2) is fed to provide 35% excess oxygen and the fractional conversion of HCI is 85%.
What mass of ethylene glycol, HOCH2CH2OH, must be dissolved in 4.510 kg of water to result in a freezing point of 18.0°C? What is the boiling point of the same solution?
A gas mixture containing 55 mol% propane and 45 mol% propylene is to be separated into products containing 10 and 90 mol% propane by adsorption in a continuous, countercurrent adsorption system operating at 25°C and 1 atm. The adsorbent is silica ..
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